pip

Advanced Installation || pip || uv || pixi || conda || Spack

To install the latest PyPI release:

pip install libensemble

To pip install libEnsemble from the latest develop branch:

python -m pip install --upgrade git+https://github.com/Libensemble/libensemble.git@develop

Installing with mpi4py

If you wish to use mpi4py with libEnsemble (choosing MPI out of the three communications options), then this should be installed to work with the existing MPI on your system. For example, the following line:

pip install mpi4py

will use the mpicc compiler wrapper on your PATH to identify the MPI library. To specify a different compiler wrapper, add the MPICC option. You also may wish to avoid existing binary builds; for example,:

MPICC=mpiicc pip install mpi4py --no-binary mpi4py